Brother 8840DN - B/W Laser - All-in-One User Manual page 52

You can place up to 3 envelopes or up to 50 sheets of 20 lb or
2
80 g/m paper in the MP tray.
4
While pressing the paper-guide release lever, slide the paper
guide to fit the paper size.
When you put paper in the MP tray, please remember the
following:
■
The side to be printed on must be face up.
■
During printing, the inside tray rises to feed paper into the
MFC.
■
Put the leading edge (top of the paper) in first and push it
gently into the tray.
2 - 9 PAPER